Question

factorise 50/x2-2x2/81​

Answer 1

Answer:

2(5/x+x/9)(5/x-x/9)

Explanation:

$\frac{50}{x^{2}}-\frac{2x^{2}}{81}$

=$2 \left (\frac{25}{x^{2}}-\frac{x^{2}}{81}\right )$

=$2 \left (\frac{5^{2}}{x^{2}}-\frac{x^{2}}{9^{2}}\right )$

=2[(5/x)² - (x/9)²]

= 2(5/x+x/9)(5/x-x/9)

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